Razor-strop.



No.a3s,7za. 1

F. L. BRUNSWICK.

RAZOR sTRoP. l APPLICATION FILED .AUG` 26, 1905. BEIEWED AUG. 27. 1906'.

y PATENTBD 00T. za, 190e.

No. 833,728. l PATENTED UGT. 2.3,l 1906.-

' I'. L. BRUSWICK.l

RAZOR STROP. APPLIoMIoN FILED 11116.36, 1905. Mmewnn AUG. 27. 1906.

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UNrrEn sTArEs yPATENT onirica.

FREDRIOK L. BRUNSWICK, OF OSWEGO, NEW YORK.A

RAZOR-STROP.

Application led August 26, 1905.

To a/ZZ whom it may concern,.-

Beit known that I, FREDRICK L. BRUNS- WICK, of Oswego, in the county ofOswego, in the State of New York, have invented new and usefulImprovements in Razor-Stropping Machines, of which the following, takenin connection with the accompanying drawings, is a full, clear, andexact description.

This invention relates to improvements in razor-stropping machines, andrefers more particularly to certain improvements in my Patent No.620,273, February 28, 1899, in which the essential object is to providerotary strops revolving ina plane at substantially right angles to itsaxis of rotation across the opposite edges of a razor which is held inan oscillatory support brought into action by the revolving of thestrops. In the manufacture and use of this device I have strops uponyielding supports, which are capable of slight oscillatory movementtransversely of the direction of extension of the strop, so as to avoidundue abrasion or creasing of the strop by the end edge of the razor. Ihave also found that in order to properly sharpen a razor without unduewear the strop should be brought against its opposite side withpractically the same degree of pressure, and it therefore becomesnecessary to provide means for adjusting the razor or strops laterallyor axially, so as to bring the edge of the razor into the samev relationwith each strop.

The objects, therefore, of mypresent invention are to provide means foraccomplishing these results, as well as to improve the general structureof the machine, so as to give it greater rigidity and ease of actionwithout sacrificing its lightness or durability. These specific objectswill be brought out in the following description.

'In the drawings, Figure 1 is a top plan of a razor-sharpening machineembodying the features of my invention. Fig. 2 is a side elevation ofthe same, a portion thereof being shown in section to show the shaft forthe 0scillating razor-support. Fig. 3 is an enlarged'elevation, partlyin section, of the rotary strop-supporting heads and theirsupporting-shaft, together with the spiral cam for actuating theoscillatory razor-support. Fig. 4 is an end view of the oscillatoryrazorsupporting frame and its actuating-cam, said Specification ofLetters Patent.

and the jaws 8 are spring-pressed against discovered that it 1sadvisable to mount the ence to Figs. 2 and 3.

Patented Oct. 23, 1906 Renewed August 2'7, 1906. Serial No. 332,206.

frame being shown in full lines in one extreme position and in dottedlines in its other extreme position. Fig. 5 is a sectional view taken online 5 5, Fig. 2. Fig. 6 is an enlarged sectional view taken on line 66, Fig. 2.

In carrying out the objects stated I provide a suitable supporting baseor standard 1 with a bearing 2, in which is mounted anfoscillatoryrazor-support comprising a rock-shaft 3 and opposite arms 4 and 5,whichare secured to the shaft 3 at opposite sides of the standard 1, the arm4 being provided with opposed spring clamping-plates 6, receivingbetween them the back edge of a razor a, while the other arm 5 isprovided with a central blade 7 and opposed spring-jaws 8, the blade oriprojection 7 entering between the opposite handle-sections of therazor-handle, as a',

the

opposite or outer faces of said handle. The

spring-j aws 6 are tensioned toward eachother` to firmly grip. and holdthe razor-blade in operative position during the stropping operation,and the spring-jaws 8 and blade 7 perform a similar function for thehandle of the The upper end of the standard 1 is bifurv cated, formingseparated bearings 9, in which is journaled a rotary shaft 10, providedwith vfa rigid collar or sleeve 11, having a spiral groove 12, saidcollar fitting between the bearings 9 and holding the shaft from endwisemovement. The ends of the shaft project in opposite directionsbeyond-the bearings 9, and upon the ends of the shaft are adjustablysecured suitable heads 13, each having a pair of diverging arms 14forsupporting flexible razor-strops 15, as best seen in Figs. 1 and 2.These heads or collars 13 are adjustable axially by means ofadjustingscrews 16, which are interlocked with annular ribs 17 on thecollar 13 and engage threaded sockets 18 in the ends of the shaft 10, asbest seen in Fig. 3, said headsbeing held in their adjusted position bysuitable set-screws 20. The arms 14 of each head 13 project indiametrically opposite directions from ythe shaft 10 and of courserevolve in substantially vertical planes at opposite sides of thestandard 1, as is clearly evident upon refer- One of the heads, orrather the arms 14, at one side is provided with a handpiece 21, bywhich the shaft 10 and parts mounted thereon are rotated. The

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extreme outer ends of the arms 14 of each pair are broadened into fiatblades extending in the direction of rotation or circumferentially andare each provided with an inwardly-pro jecting stud 22, having abifurcated inner end, in which is pivoted centrally a rock-bar 23, andwhereby the rock-bar is held a slight distance away from the inner faceof the arm 14. A flat bow-spring is clamped centrally to the arm 14 bythe screw-stud 22, and its free ends bear upon the adjacent face of therock-bar 23 at opposite sides of its pivot, as 25. Each of the rock-bars23 is provided with a companion bar `26, which is held in place byadjusted screws 27 near the ends of the bar 23 and whereby said bar 26may be adjusted toward and from the bar 23 by simply rotating the screw27, the object of which will be presently disclosed. In like manner eachof the bars 26 is provided witha companion bar 29, which is held inplace by screws 30, Fig. 5, and is capable of being adjusted toward andfrom the bar 26 by said screws, the latter being engaged in threadedapertures in the bars 26 and 29. It will be observed that each of thearms 14 is provided with one of the rock-bars 23 and companion bars 26and 29, the latter being held parallel with the rock-bar 23 and with theplane of rotation of the arms 14 by means of the screws 27 and 30.

The ends of the strops or leather straps are stretched across the spacebetween the extreme ends of the arms 14 and also across the inner facesof the bars 26 and 29, as best seen in Fig. 5, and are clamped betweenthe bars 29 and heads of their screws 30, which preferably pass throughapertures, as 31, in the ends of the leather strap. The screws 30 arepreferably journaled in the bar 29, but are tapped into the bar 26 insuch manner that by rotating these screws the bar 29 will be adjustedtoward or from the bar 26 for the purpose of loosening or tightening thestrap 15, such adjustment being effected without releasing the ends ofthe strap from between the bar 29 and screw-heads. In like manner thescrews 27 may be adjusted to vary the plane of rotation of theirrespective straps* that is, to adjust said straps toward and from thestandard 1. This adjustment, however, is better effected through themedium of the screws 16, by which the arms 14 are moved axially, thescrews 30 being also utilized to stretch the edges of the strapsuniformly, while the screws 27 may be utilized to bring both edges ofthe strap in the same plane.

The arm 4 of the razor-supporting frame extends some distance above itsaxis of movement and is provided with a pin or stud 32, which enters thecam-groove 12 in the collar 11, and as said collar is rotated thecamfaces of the groove 12 operate to oscillate the arms 4 and 5 fromside to side between and against the adjacent faces of the strops 15 asthey are moved in the direction indicated by arrow X, Fig. 2, the degreeof oscillation being indicated in Fig. 4, and the axis of oscillation islocated substantially midway between the vertical planes through whichthe strops 15 rotate. The cam-groove 12 is, therefore, arranged in suchmanner as to oscillate the razor-supporting jaws equidistant to oppositesides of a vertical line drawn through the axis of rotation of the arms4 and 5.

In order that the blade of the razor may be properly adjusted and heldfrom independent vibratory movement between the jaws 6, so that thestropping-faces of both strops will engage the edge of the blade at thesame angle, I provide the arm 4 with vertically-adjustable clamping-arms33, having slots 34, receiving adjusting-screws 35, by which the armsare held in their adjusted position, the upper ends of said arms beingprovided with opposite clamping-screws 35 for engaging opposite sides ofthe blade, as best seen in Fig. 4. These clamping-arms 6 are preferablysecured to opposite sides of the inner ends of the plates 6 out of thepath of rotation of the razor-strops 15, which latter, therefore, travelacross the face of the blade fiat wise from the back toward the edge ofthe razor, and it will be seen that as the strops are rotated theadvance edge of the strop first engages the edge of the razor, andinasmuch as it is necessary to stretch these strops rather tightly it isapparent that unless the strops are mounted upon yielding supportssuch,for instance, as the oscillatory bar 23 and its spring 24-the stropwould be unduly worn or creased at the end of the razor, and it is forthis reason that the springs 24 and yielding clamps for the ends of thestrops are provided.

It is advisable to provide means for preventing the opposite rotation ofthe strops 15, which would cause the cutting of the strops by the edgeof the razor, and I therefore pro vide the shaft 10 or collar 11 with afinely serrated or toothed disk 40, the teeth of which are engaged by agravity-pawl 41, Fig. 2, said pawl being journaled upon a portion of thestandard 1.

In operation the shaft 10, collar 11, and the arms 14 are rotated in thedirection indicated by arrow X, and the cam-groove 12 is so arranged asto bring the razor flatwise against the upwardly-moving strop`that is,as the right-hand strop is moved upwardly the razor-blade support isrocked to the right and when the left-hand strop is moved upwardly saidsupport is rocked to the left. When inserting the razor in position forsharpening, the back edge of the bladeis moved endwise between thespring-jaws 6, as best seen in Fig. 4, and is then adjusted and IOO IIO

held in place by the clamping-screws 35 the handle a being previouslyrocked downwardly between the jaws 8.

l What I claim is- 1. In a razor-sharpening machine, the combination ofrotary strops having their stropping-surfaces in planes at substantiallyright angles to their aXes of rotation, a support for the razor, meanscontrolled by the movement of the strops for moving the razor to presentits side in position to be stropped, and adjusting-screws engagingopposite faces of the blades of the razor for adjusting the same andholding it in its adjusted position.

2. In a razor-stropping machine, the combination with rotary strops andtransverselyrocking supports therefor one at each end of each strop, andmeans to rotate the strops.

3. In a razor-sharpening machine, the combination of rotary stropsmoving in dierent vertical planes at substantial right angles to theiraXes of rotation, yielding supports for the ends of the strops, wherebythey may rock transversely and means to. rotate said strops.

et. In a razor-sharpening machine, the combination of rotary stropsmoving indifferent vertical planes, a razor-support oscillating betweensaid planes, means controlled by the rotation of the strops foroscillating the razorsupport and clamping devices adjustable toward andfrom and transversely of the blade of the razor for engaging the sameand holding vit in its adjusted position.

5. In a razor-sharpening machine, an upright standard, a shaft journaledon the standard, a second shaft also journaled on the standard,strop-supports secured to the first-named shaft to rotate in differentplanes and a razor-holder secured to the rock-shaft.

6. In a razor-sharpening machine, a combination of a pair of stropsmoving about a common aXis, but in diHerent planes, a razorholdermovable laterally between said lanes to bring the razor into engagementwit said strops, yielding supports for the ends of said strops, andmeans actuated by the rotation of the strops for moving the razor-holderfrom side to side.

7. In a razor-sharpening machine, a pair of rotary strops moving indifferent planes, an oscillatory razor-holder movable from side to sidebetween said planes, adjustable clamps for engaging the opposite facesof the razor-blade to adjust and hold the same against vibratorymovement in its holder, and means brought into action by the rotation ofthe strops to actuate said holder from side to side.

8. In a razor-sharpening machine, the combination of a pair of rotarystrops moving in different planes, means for tensioning the strops, arazor-holder movable from side to side between said planes, and meansactuated by the rotation of the strops for moving said holder from sideto side.

9. In a razor-sharpening machine, the com- .bination of two rotarystrop-holders, one of Which is adjustable endwise, or axially, means foreffecting such adjustment, strops yieldingly mounted on said holders, arazor-support movable from side to side between the strops, and meanscontrolled by the rotation of the strops for actuating said holder.

10. In a razor-sharpening machine, a pair of rotary strop-holders movingin different planes, strops yieldingly mounted upon said holders, meansfor tensioning the strops, a

. razor-support movable from side to side between said planes, and meanscontrolled by the rotation of the strop-holders for actuating therazor-support.

11. In a razor-sharpening machine, a rockshaft having a crank-arm andspring-jaws secured to the crank-armfor receiving between them the backedge of the razor-blade, means to rock said shaft, a rotary stroptraveling across the arc of movement of the razor-support, and means torotate the strop.

12'. In a razor sharpening machine, the combination of a rotary shaft,opposite heads adjustable endwise on the shaft and each.

provided with a pair of diverging arms, a strop secured to each pair ofarms, a cam on the shaft, and a razor-support actuated from side to sideby said cam.

13. In a razor-sharpening machine, a rotary shaft and strop-holdersmounted thereon, in combination with an oscillatory razorholder and aspiral cam on the shaft for oscillating said razor-holder.

14. In a razor-sharpening machine, a rotary shaft, strop-supportsadjustable 'endwise and rotating with said shaft, strops mounted on saidsup )orts to rotate in diHerent planes, spring clamping-jaws receivingbetween them the razor-blade and movable from side to side between saidplanes, and a cam on the shaft for effecting such movement of the jaws.

15. In a razor-sharpening machine, a rotary shaft, strop-supportsmounted upon the shaft and adjustable endwise thereon, rockbars mountedupon each of said supports, strops having their ends carried by therockbars, an oscillatory razor-holder, and means on the shaft foroscillating said holder.

In witness whereof I have hereunto set my hand this 30th day ofDecember, 1905.

FREDRICK L. BRUNSWICK.

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